ROBERTSON MARGARET. (2017). SUSTAINABILITY PRINCIPLES AND PRACTICE (2.). EARTHSCAN FROM ROUTLEDGE.
Chicago-čujuhus (17. p.)ROBERTSON MARGARET. SUSTAINABILITY PRINCIPLES AND PRACTICE. 2. EARTHSCAN FROM ROUTLEDGE, 2017.
MLA-čujuhus (9. p.)ROBERTSON MARGARET. SUSTAINABILITY PRINCIPLES AND PRACTICE. 2. EARTHSCAN FROM ROUTLEDGE, 2017.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.